In an interdisciplinary project funded by AiF in cooperation with two institutes of the TU Darmstadt (Psychology and Sport Science) and the Biomechatronics Group of the Fraunhofer IPA in Stuttgart, we are working on the idea of elaborating the way in which prosthetic sockets are fitted: evolving from handcraft to a semi-automatic development method. Using experimental trials, modeling approaches, the expertise of outstanding orthopedic technicians and the subjective feedback given by amputees, we want to objectify the fitting process and develop a method which decreases fitting time and iterations while reducing the dependence on the technician’s expertise.